9579699
Descrição
Quiz por Jeanie Fitzgerald, atualizado more than 1 year ago
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Criado por Jeanie Fitzgerald
quase 7 anos atrás
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Questão 1
Questão
_____________ is demonstrated by the connectors ability to withstand hundreds of insertion and withdrawal cycles without failing. This is expressed as mean time between failure.
Responda
-
Functionality
-
Durability
-
Coupling
Questão 2
Questão
One of the purposes of a standard is to ensure a minimal level of acceptable ______________.
Responda
-
performance
-
process
-
method
Questão 3
Questão
While codes and safety standards address the safety of persons and property in the installation or use of a system, codes ________ ensure system functionality.
Responda
-
do
-
do not
-
shall
Questão 4
Questão
The predominant coaxial cables used for video are
Responda
-
Series 6, Series 11
-
RG 59, RG 6
Questão 5
Questão
_______________ is the movement of information by electromagnetic energy in the form of electrical or optical signals from one point to another through a transport medium.
Responda
-
Bandwidth
-
Frequency
-
Transmission
Questão 6
Questão
Twisted pair cable is called ___________where coaxial cable is called _____________.
Responda
-
unbalanced, balanced
-
balance, unbalanced
Questão 7
Questão
All electrical activity produces electric and magnetic fields.
Responda
- True
- False
Questão 8
Questão
The transmission of analog data can be converted from analog format to digital with a ____________.
Responda
-
Codec
-
Modem
Questão 9
Questão
________________ represents the information carrying capacity of a system.
Responda
-
Bandwidth
-
Frequency
-
Transmission
Questão 10
Questão
______________ is a property of conductor that allows storage of electric charges when potential differences
(voltages) exist between the conductors.
Responda
-
Inductance
-
Capacitance
-
Resistance
Questão 11
Questão
In ac circuits, the total opposition to current flow is called ___________, which is measured in ohms.
Responda
-
Capacitance
-
Inductance
-
Impedance
Questão 12
Questão
_______________ is defined in the number of cycles a signal is repeated in a given time period.
Responda
-
Frequency
-
Voltage
-
Current
Questão 13
Questão
The measure of a signal loss resulting from the insertion of a component, link, or channel between a transmitter and receiver is
Responda
-
Return loss
-
Cross-talk
-
Attenuation
Questão 14
Questão
_______________ is a property of an electromagnetic field built around a conductor that opposes any changes in current flow in a circuit, both ac and varying dc.
Responda
-
Inductance
-
Impedance
-
Capacitance
Questão 15
Questão
The transmission of digital data can be accomplished on a direct digital basis over a digital circuit, or it can be converted to a analog signal with a ________________ .
Responda
-
codec
-
modem
Questão 16
Questão
This is the property of a conductor to resist the flow of electricity through it.
Responda
-
Resistance
-
Inductance
-
Impedance
Questão 17
Questão
The unwanted transfer of a signals electromagnetic energy from one or more circuits to other circuits is called______________.
Responda
-
Attenuation
-
Crosstalk
-
Inductance
Questão 18
Questão
Test equipment uses Nominal Velocity of Propagation (NVP) to determine the length of a cable.
Responda
- True
- False
Questão 19
Questão
______________ quantifies the bandwidth of a cabling system in a frequency range.
( size of the highway )
Responda
-
megahertz
-
megabit
-
decibel
Questão 20
Questão
_____________ refers to the amount of information that can be transported over the media.
( vehicles on the highway )
Responda
-
megahertz
-
megabit
-
decibel
Questão 21
Questão
Electromagnetic interference (EMI) conditions can be remedied by... select all the are correct.
Responda
-
shielded cabling
-
increasing physical separation
-
placing unshielded cable in conduit
Questão 22
Questão
The POTS signal range is transmitted between______________, which is regarded as the minimum range for human speech to be audible and recognizable.
Responda
-
300 and 3400 Hz
-
300 and 3400 MHz
-
300 and 3400 kHz
Questão 23
Questão
System gain and attenuation are typically stated as ______ gain or _______ loss.
Responda
-
bandwidth
-
frequency
-
decibel
Questão 24
Questão
________________ is the ratio of the power of the outgoing signal to the power of the reflected signal and is expressed in decibels.
Responda
-
return loss
-
insertion loss
-
cross talk
Questão 25
Questão
Because of the different twist rates in a multi-pair cable, the physical length of untwisted pairs is not equal.
Responda
- True
- False
Questão 26
Questão
What is the frequency of TIA category 6, ISO category 6/Class E.
Responda
-
100 MHz
-
250 MHz
-
500 MHz
Questão 27
Questão
What are the common modular connectors used in ICT: select all that are correct
Responda
-
4P4C
-
6P6C
-
8P8C
Questão 28
Questão
Delay skew is the difference in the propagation delay between the slowest and fastest pairs within the same cable sheath.
Responda
- True
- False
Questão 29
Questão
110 termination blocks come in increments of________________
Responda
-
50, 100, 300, and 900
-
50, 100, 600, and 900
-
50, 150, 300, and 900
Questão 30
Questão
Bix termination blocks assemblies come in increments of ____________
Responda
-
50, 100, 300, 900
-
50, 150, 300, 600
-
50, 250, 300, 900
Questão 31
Questão
Series 6 and Series 11 have a coated foil shield over the dielectric to shield against_________frequencies, while the braided shield over the coated foil is to shield against ____________frequencies.
Responda
-
low, high
-
high, low
Questão 32
Questão
In optical fiber, the purpose of the ________ is to confine the light within the _________ by creating a reflective boundary.
Responda
-
cladding and core
-
core and acrylate coating
-
core and cladding
Questão 33
Questão
_____________ is the most common for backbone and horizontal runs within building and campus environments.
Responda
-
multi-mode
-
single-mode
Questão 34
Questão
A code can be defined as " a rule or set of rules intended to ensure safety during the installation and use of materials, components, fixtures, systems, premises and related subjects."
Responda
- True
- False
Questão 35
Questão
Who normally enforces the codes and legal regulations for the jurisdiction?
Responda
-
OSHA
-
AHJ
-
Fire marshall
Questão 36
Questão
Increasing either the length of the optical fiber cable or the wavelength of the light source decreases the bandwidth and the information carrying capacity of the transmission path.
Responda
- True
- False
Questão 37
Questão
_____________ is the widening or spreading out of the modes in a light pulse as it progresses along the optical fiber.
Responda
-
Bandwidth
-
Dispersion
-
Refraction
Questão 38
Questão
Modal dispersion results from the different optical path lengths in a multi-mode fiber.
Responda
- True
- False
Questão 39
Questão
This type of optical fiber is : primarily used outdoors, has shorter jacket length to the fiber length, allows jacket to expand and contract with temperature changes, may contain water blocking material...
Responda
-
Tight buffered
-
Simplex
-
Loose tube
Questão 40
Questão
Humans can hear frequencies that range from _______to_________.
Responda
-
20 Hz to 2000 Hz
-
20 Hz to 20,000 Hz
-
20 MHz to 20,000 MHz
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